I used to be quite disgusted by my own belief that when older I would reproduce through urinating into a woman's vagina. Needless to say I was young enough not to have known what other fluids eminate from "the little fella".
A childhood belief about reproduction

others believed things like this
- Whenever I saw a picture of a whale spouting water, I thought it was urinating.Anon
- Up to the age of 12 I was convinced urinating while in mid copulation resulted in a Downs Syndrome baby.— Nathan Harlow
- when i was really young, i couldn't figure out why i can't get older than my older sister.— angela
- When I was little i believed the man had to be older than the woman— its just me
- I used to belief sloths lived in trees outside my childhood home. My older sister told me so.Anon
- Until I was around 9 or 10 I believed that a woman was only allowed to marry a man who was older than her. — Rose